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cutting off of the grate must be always toward the back wall at the frontal view into the boiler. In case
of 5 - 7 sectional boiler size the cutting off of the grate must always be directed to entry to the fuel
feeder.)

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Then we proceed according to chap. 5.2.

Conversion of already installed boiler:

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We let the boiler burn out.

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We disconnect the boiler from mains

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We disconnect the geared motor, ventilator (we disconnect the connector), boiler primary pump, safety
thermostat from regulator and we pull out the sensor against fire penetration from the basin and outlet
sensor from the boiler basin, we disconnect the outside sensor and QAA 88 device. Depending on the
used pump or mixing heating circuit we disconnect the HW sensor with three-way valve or thermostat
with HW pump, HC pump with mixing valve and heating circuit sensor.

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We disconnect the emergency fire extinguishing equipment.

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First of all we empty the reservoir. We dismantle the fuel reservoir from the fuel feeder (the connection
accessories are as follows: 4 pc screw M8 x 20, 4 pc washer 8,4 and 4 pc nut M8).

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We disconnect the fuel feeder from the boiler basement (the connection accessories are as
follows: 4 pc screw M10 x 20, 4 pc washer 10,5).

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We remove the boiler shell.

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We remove the grate and pull out the burner with mixer from the basement (the connection accessories
are as follows: 6 pc screw M10 x 30, 12 pc washer 10,5, 6 pc nut M10).

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Unscrew the the blind flange, insulation, holder (bracket) of insulation from the left side of the base (see
Fig.No. 17 - detail B) and install them on the right side (the connecting material is as follows: 4 screws
M10 x 30, 8 pc washer 10,5 , 4 pc nut M10). Remove the old sealant. It is necessary to seal by means of
sealant the metal plates between the base and holder of insulation and between the holder (bracket) of
insulation and the blind flange

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We apply mastic to the burner with mixer flange and we put the burner into the basement from the left-
hand side and screw it (the connection accessories are as follows: 6 pc screw M10 x 30, 12 pc washer
10,5, 6 pc nut M10).

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We remove the old mastic from the grate. We apply a reasonable quantity of new mastic to the

bearing surfaces and we mount the grate in the burner. (Note: In case of a 4 sectional boiler size the
cutting off of the grate must be always toward the back wall at the frontal view into the boiler. In case of 5
- 7 sectional boiler size the cutting off of the grate must always be directed to entry to the fuel feeder.)

!!!!

Apply  boiler  mastic  to  the  point
marked  and  put  the  grate  on  the
retort  with  mixer.  It  is  necessary to
ensure  the  tightness  between  the
burner and grate.

!!!!

Apply  boiler  mastic  to  the  point
marked  and  put  the  grate  on  the
retort  with  mixer.  It  is  necessary to
ensure  the  tightness  between  the
burner and grate.